<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>我的一个网页</title>
    <link rel="styleSheet" type="text/css" href="2.css"/>
</head>
<body>
    <h1>欢迎来到我的网页</h1>
    <p>这是一个段落</p>
    <a href="http://www.baidu.com">这是一个链接</a>
    <div class="container">
        <div class="float-left"></div>
        <div class="float-right"></div>
        <div class="text">A</div>
    </div>
    <div class="relative">
        B
        <div class="absolute">
            C
        </div>
        D
    </div>
    <div class="flex-container">
        <div class="flex-item">E</div>
        <div class="flex-item">F</div>
        <div class="flex-item">G</div>
        <div class="flex-item">H</div>
        <div class="flex-item">I</div>
    </div>
</body>
</html>